55#ifndef _GLIBCXX_ALGORITHM
56#define _GLIBCXX_ALGORITHM 1
58#pragma GCC system_header
63#if __cplusplus > 201703L
67#if __cplusplus > 201402L
69# if _PSTL_EXECUTION_POLICIES_DEFINED
71# include <pstl/glue_algorithm_impl.h>
74# include <pstl/glue_algorithm_defs.h>
75# define _PSTL_ALGORITHM_FORWARD_DECLARED 1
79# define __cpp_lib_parallel_algorithm 201603L
82#ifdef _GLIBCXX_PARALLEL